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Synthesis, Structure, and Properties of Potassium fac-Trichlorotrinitroiridate(III)

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Abstract

Potassium salt of the iridium(III) chloronitro complex fac-K3[Ir(NO2)3Cl3] is obtained in the interaction of the iridium(III) trinitrotriaqua complex with potassium chloride in an aqueous solution. The salt structure is analyzed by single crystal X-ray diffraction. Crystallographic data: a = 7.3460(3) Å, b = 12.9904(5) Å, c = 13.1841(6) Å, β = 93.924(1)°, space group P21/с, Z = 4, ρcal = 3.026 g/cm3. In the crystal structure, molecules of the [Ir(NO2)3Cl3]3– complex anion having a distorted octahedral geometry (Ir–N = 2.02-2.04 Å, Ir–Cl = 2.37-2.38 Å) are arranged in layers perpendicular to the с axis. Spectral characteristics (IR, Raman, UV-vis) of the salt are determined together with its transformations during thermolysis in the inert atmosphere. Experiments are performed on sorption of the [Ir(NO2)3Cl3]3– complex on nickel hydroxide, which model iridium loss during the precious metal refining process by the precipitation scheme.

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Funding

The work was supported by the Ministry of Science and Higher Education of the Russian Federation, project No. 121031700315-2.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

    P. A. Topchiyan, N. V. Kuratieva, D. B. Vasilchenko & S. V. Korenev

  2. Novosibirsk State University, Novosibirsk, Russia

    V. A. Nikolaev

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  1. P. A. Topchiyan
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  2. V. A. Nikolaev
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  3. N. V. Kuratieva
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  4. D. B. Vasilchenko
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  5. S. V. Korenev
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Correspondence to D. B. Vasilchenko.

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Russian Text © The Author(s), 2023, published in Zhurnal Strukturnoi Khimii, 2023, Vol. 64, No. 7, 113295.https://doi.org/10.26902/JSC_id113295

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Topchiyan, P.A., Nikolaev, V.A., Kuratieva, N.V. et al. Synthesis, Structure, and Properties of Potassium fac-Trichlorotrinitroiridate(III). J Struct Chem 64, 1296–1304 (2023). https://doi.org/10.1134/S0022476623070132

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